Guidelines for designing highly concentrated electrolytes for low temperature applications
Guillaume Ah‐Lung, Benjamin Flamme, Fouad Ghamouss, Manuel Maréchal, Johan Jacquemin
Abstract
The redefinition of the commonly named "water-in-salt" clarifies the operating temperatures of the state-of-the-art LiTFSI-based aqueous solutions. An in-depth study shows its mismatch for low temperature applications. In contrast, the recommended strategy is to design an electrolyte with an invariant composition, as exemplified by the eutectic water/LiNO3 that is able to electrochemically cycle down to -23 °C.
Topics & Concepts
ElectrolyteChemistryChemical engineeringNanotechnologyMaterials scienceComputer scienceEngineeringPhysical chemistryElectrodeChemical and Physical Properties in Aqueous SolutionsIonic liquids properties and applicationsAdvanced Battery Materials and Technologies